HUAWEI BTS3012AE Base Station

7/24/2019 HUAWEI BTS3012AE Base Station

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HUAWEI BTS3012AE Base StationSystem Description Contents

Issue 01 (2006-09-06) Huawei Technologies Proprietary i

Contents

1 Introduction to BTS3012AE ........................... .............................. ............................. ........... 1-1 1.1 Position of the BTS3012AE in the GSM Network........................................................................................1-2

1.2 Features of the BTS3012AE .........................................................................................................................1-3

2 Key Benefits of the BTS3012AE ............................. .............................. ............................. ..2-1 2.1 Coverage Capability......................................................................................................................................2-2

2.2 Capacity ........................................................................................................................................................2-2

2.3 Networking Capability ..................................................................................................................................2-2

2.4 Clock and Synchronization ...........................................................................................................................2-2

2.5 Antenna .........................................................................................................................................................2-3

2.6 Power Supply System....................................................................................................................................2-3

2.7 Environment Adaptability .............................................................................................................................2-3

2.8 Installation.....................................................................................................................................................2-4

2.9 Multiple Frequency Bands Applications .......................................................................................................2-4

2.10 Space Reservation .......................................................................................................................................2-4

3 System Architecture..............................................................................................................3-1 3.1 Physical Architecture.....................................................................................................................................3-2

3.2 Functional Architecture.................................................................................................................................3-4

3.2.1 Common Subsystem ............................................................................................................................3-5

3.2.2 Double-Transceiver Subsystem............................................................................................................3-6

3.2.3 RF Subsystem ......................................................................................................................................3-7

3.2.4 Power Supply Subsystem.....................................................................................................................3-8

3.2.5 Monitoring Subsystem.........................................................................................................................3-8

3.3 System Configuration....................................................................................................................................3-8

4 Services and Features............................................................................................................4-1 4.1 Services .........................................................................................................................................................4-2

4.2 Features .........................................................................................................................................................4-2

5 Operation and Maintenance.......................... .............................. ............................. ........... 5-1 5.1 O&M Subsystem...........................................................................................................................................5-2

5.1.1 Overview of the O&M Subsystem .......................................................................................................5-2

5.1.2 Terminal Maintenance..........................................................................................................................5-2

5.1.3 Remote Maintenance............................................................................................................................5-2


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ContentsHUAWEI BTS3012AE Base Station

System Description

ii Huawei Technologies Proprietary Issue 01 (2006-09-06)

5.2 O&M Functions ............................................................................................................................................5-3

5.2.1 Security Management ..........................................................................................................................5-3

5.2.2 Alarm Management..............................................................................................................................5-3

5.2.3 Data Configuration...............................................................................................................................5-3

5.2.4 Maintenance Management ...................................................................................................................5-3

6 Reliability...............................................................................................................................6-1 6.1 System Reliability .........................................................................................................................................6-2

6.2 Hardware Reliability .....................................................................................................................................6-2

6.3 Software Reliability ......................................................................................................................................6-3

7 Technical Specifications.......................... ................................ ........................... .................. 7-1 7.1 Radio Specifications......................................................................................................................................7-2

7.1.1 Working Frequency Bands...................................................................................................................7-2

7.1.2 Transmit Specifications........................................................................................................................7-2

7.1.3 Receive Specifications .........................................................................................................................7-3

7.2 Engineering Specifications............................................................................................................................7-3

7.2.1 Dimensions ..........................................................................................................................................7-3

7.2.2 Weight ..................................................................................................................................................7-3

7.2.3 Power Supply.......................................................................................................................................7-4

7.2.4 Power Consumption.............................................................................................................................7-4

7.2.5 Transmission ........................................................................................................................................7-5

7.2.6 Operation Environment........................................................................................................................7-6

7.2.7 EMC.....................................................................................................................................................7-6

7.2.8 Acoustic Noise .....................................................................................................................................7-6 7.2.9 Storage Environment............................................................................................................................7-6

7.2.10 Transportation Environment ..............................................................................................................7-6

7.2.11 Equipment Protection.........................................................................................................................7-6

7.2.12 Anti-Seismic Performance .................................................................................................................7-7


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HUAWEI BTS3012AE Base StationSystem Description Figures

Issue 01 (2006-09-06) Huawei Technologies Proprietary iii

Figures

Figure 1-1 Position of the BTS3012AE in the GSM network............................................................................1-2

Figure 3-1 BTS3012AE cabinet .........................................................................................................................3-2

Figure 3-2 Full configuration of the BTS3012AE..............................................................................................3-3

Figure 3-3 Functional modules of the BTS3012AE ...........................................................................................3-5

Figure 5-1 Topology of the O&M subsystem.....................................................................................................5-2


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HUAWEI BTS3012AE Base StationSystem Description Tables

Issue 01 (2006-09-06) Huawei Technologies Proprietary v

Tables

Table 1-1 Application scenarios of the double-transceiver BTS family .............................................................1-2

Table 3-1 Boards and modules............................................................................................................................3-3

Table 3-2 Board in the common subsystem and their functions .........................................................................3-6

Table 3-3 Boards in the double-transceiver subsystem and their functions........................................................3-7

Table 3-4 RF subsystem components and their functions...................................................................................3-7

Table 3-5 Boards of the power supply subsystem and their functions................................................................3-8

Table 4-1 BTS3012AE service list .....................................................................................................................4-2

Table 7-1 BTS3012AE working frequency bands..............................................................................................7-2

Table 7-2 Nominal output power of the DTRU ..................................................................................................7-2

Table 7-3 BTS3012AE receive sensitivity..........................................................................................................7-3

Table 7-4 Mechanical dimensions of the BTS3012AE.......................................................................................7-3

Table 7-5 Weight of the BTS3012AE .................................................................................................................7-3 Table 7-6 Specifications of the input power .......................................................................................................7-4

Table 7-7 Power consumption of the BTS3012AE under typical configuration ................................................7-4

Table 7-8 BTS3012AE transmission interfaces ..................................................................................................7-5

Table 7-9 Other external interfaces of the BTS3012AE.....................................................................................7-5

Table 7-10 BTS3012AE operation environment requirements...........................................................................7-6


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HUAWEI BTS3012AE Base StationSystem Description 1 Introduction to BTS3012AE

Issue 01 (2006-09-06) Huawei Technologies Proprietary 1-1

1 Introduction to BTS3012AEAbout This Chapter

The following table lists the contents of this chapter.

Title Description

1.1 Position of theBTS3012AE in the GSMNetwork

Introduces the position of the BTS3012AE in the GSMnetwork, and the application scenarios of thedouble-transceiver BTS family.

1.2 Features of theBTS3012AE

Introduces the features of the BTS3012AE.


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1 Introduction to BTS3012AEHUAWEI BTS3012AE Base Station

System Description

1-2 Huawei Technologies Proprietary Issue 01 (2006-09-06)

1.1 Position of the BTS3012AE in the GSM NetworkThe Huawei double-transceiver Base Transceiver Station (BTS) family provides a range ofcustomized solutions for the GSM radio access network according to your requirements andactual network environments.

Figure 1-1 shows the position of the BTS3012AE in the GSM network.

Figure 1-1 Position of the BTS3012AE in the GSM network

BSC

BSC/PCU

GSM NSS

BSS

MS

BTS3012AE

BTS3006C

BTS3002C

BTS3012A

BTS3012

BTS30

BTS3006A

BTS312

MS

MS

MSC

Table 1-1 lists the application scenarios of the double-transceiver BTS family.

Table 1-1 Application scenarios of the double-transceiver BTS family

Type Model MaximumTRXs perCabinet

Application Scenario

Indoor macroBTS

BTS3012 12 Used in highly populated areas withhigh-volume traffic or the areas wherewide coverage is required.

Outdoormacro BTS

BTS3012AE 12 Used in cities, suburbs, and rural areaswhere high-volume traffic and widecoverage are required, or the areas wherethe site for an equipment room is hard tofind or the construction cost of equipmentroom is too high.


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HUAWEI BTS3012AE Base StationSystem Description 1 Introduction to BTS3012AE


Type Model MaximumTRXs perCabinet

Application Scenario

Mini BTS BTS3006C 6 Used to provide coverage in suburbs, ruralareas, roads, airports, and railways.

1.2 Features of the BTS3012AEThe BTS3012AE is a doubletransceiver outdoor macro BTS equipped with a heat exchanger.

One BTS3012AE cabinet supports up to 12 transceivers (TRXs). It can smoothly evolve intothe GSM/EDGE Radio Access Network (GERAN).

The BTS3012AE features low construction cost, fast network deployment, and strongenvironment adaptability.

The BTS3012AE can work with indoor double-transceiver BTSs and mini double-transceiverBTSs to guarantee you a fast, economical, and efficient network deployment.


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HUAWEI BTS3012AE Base StationSystem Description 2 Key Benefits of the BTS3012AE


2 Key Benefits of the BTS3012AEAbout This Chapter


Title Description

2.1 Coverage Capability Describes the coverage capability of the BTS3012AE.

2.2 Capacity Describes the capacity of the BTS3012AE.

2.3 Networking Capability Describes the networking capability of the BTS3012AE.

2.4 Clock and Synchronization Describes the clock and synchronization features of theBTS3012AE.

2.5 Antenna Describes the antenna features of the BTS3012AE.

2.6 Power Supply System Describes the power supply system features of theBTS3012AE.

2.7 Environment Adaptability Describes the environment adaptability features of theBTS3012AE.

2.8 Installation Describes the installation features of the BTS3012AE.

2.9 Multiple Frequency BandsApplications

Describes the frequency bands that the BTS3012AEsupports.

2.10 Space Reservation Describes the design of the BTS3012AE in the aspect ofspace reservation.


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2 Key Benefits of the BTS3012AEHUAWEI BTS3012AE Base Station

System Description


2.1 Coverage CapabilityThe BTS3012AE has the following benefits in terms of coverage:

High receive sensitivity

The static sensitivity of the TCH/FS channel is 112.5 dBm (a typical value in normaltemperature)

Power boost technology (PBT)

The maximum transmit power of the DTRU can reach 80 W. Configuration of up to six cells in one cabinet

Hybrid networking of multiple frequency bands is supported. Transmit diversity and 4-way receive diversity

2.2 CapacityThe BTS3012AE has the following benefits in terms of capacity:

One BTS3012AE cabinet supports up to 12 TRXs. The maximum configuration of a sitecontaining only one cabinet is S4/4/4.

The configuration of a site formed by BTS3012AE can reach up to S12/12/12 by meansof combined cabinet or cabinet group. Each site supports 136 TRXs.

2.3 Networking CapabilityThe BTS3012AE has the following benefits in terms of networking capability:

The BTS3012AE supports multiple transmission modes such as E1, STM-1, microwave,and satellite transmission.

The BTS3012AE supports multiple topologies such as star, tree, chain, ring, and hybridtopologies.

2.4 Clock and SynchronizationThe BTS3012AE has the following benefits in terms of clock and synchronization:

The BTS3012AE clock has four modes: fast pull-in, locked, holdover, and free run. The Transmission, Timing, and Management Unit for DTRU (DTMU) of the

BTS3012AE adopts the active/standby mode, which greatly improves the reliability ofthe clock.

The BTS3012AE can process the inputs of external BITS clock.


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HUAWEI BTS3012AE Base StationSystem Description 2 Key Benefits of the BTS3012AE


2.5 AntennaThe BTS3012AE has the following benefits in terms of antenna:

Supporting Remote Electric Tilt (RET) antennas. Supporting dual polarization antennas

This reduces the number of antennas in a cell. Supporting Tower-Mounted Amplifiers (TMAs)

This improves the receive sensitivity.

2.6 Power Supply SystemThe BTS3012AE has the following benefits in terms of power supply system:

Supporting internal and external storage batteries

The BTS3012AE provides two storage battery cabins: 48 V 150 AH cabin and 48V 50 AH cabin. The BTS3012AE can be configured with a maximum of 200 AHstorage batteries. Under S4/4/4 site configuration, the internal 200 AH can supplypower for four hours when the traffic volume is in normal level.

The external storage batteries can provide up to 600 AH power. Under S4/4/4 siteconfiguration, the external storage batteries can supply power for more than fourhours when the traffic volume is in normal level.

Supporting 110 V AC dual-live power input, 220 V AC single-phase power input, and220 V AC three-phase power input. The BTS3012AE supports a wide range of voltageand frequency.

Using N+1 hot backup, and low temperature start. Having complete battery management and environment monitoring functions.

2.7 Environment AdaptabilityThe BTS3012AE has excellent environment adaptability, which greatly reduces the BTS'requirements on the environments.

The BTS3012AE uses a sealed integrated structure. It complies with the InternationalProtection standard (IP55) in terms of water prevention and dust prevention.

The BTS3012AE can operate in a wide temperature range: 40 to +45 (equipped

with a heat exchanger). In the high temperature environment, the temperature control unit dissipates the heat.

In the low temperature environment, the heater exchanger heats the BTS3012AE toensure a proper internal temperature for the BTS3012AE.

The BTS3012AE has a powerful temperature control system, which make it adapt toadverse environments.

The BTS3012AE has complete lightning protection measures. It is configured withbuilt-in DELU, and power lightning protection unit.

The environment monitoring system of the BTS3012AE enables you to monitor theenvironments around the BTS in the remote end.


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2 Key Benefits of the BTS3012AEHUAWEI BTS3012AE Base Station

System Description


2.8 InstallationThe BTS3012AE is easy to install. It has the following benefits in terms of installation.

The BTS3012AE can be installed on the cement floor, building roof, or tower. All the external cables are introduced into the cabinet through the bottom of the cabinet.

A space with 200 mm height is reserved for the cabling, which greatly facilitates themaintenance.

Field installation personnel only need to secure the cabinet, install the external cables.

The simple and fast installation of the hardware and software greatly reduces the installationtime, and enables fast network deployment.

2.9 Multiple Frequency Bands ApplicationsThe BTS3012AE supports the following frequency bands: 850 MHz, 900 MHz, 1800 MHz,and 1900 MHz. It can meet the requirements of operators in different regions.

2.10 Space ReservationBy default, the BTS3012AE has 2 U reserved space for placing the built-in E1, SDH,microwave transmission equipment a nd the equipment of the operators. The space can beextended to 7 U through the removal of the 50 AH storage battery cabin.


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HUAWEI BTS3012AE Base StationSystem Description 3 System Architecture


3 System ArchitectureAbout This Chapter


Title Description

3.1 Physical Architecture Describes the appearance and the full configuration of theBTS3012AE.

3.2 Functional Architecture Describes the functional architecture of the BTS3012AEand the functions of each subsystem.

3.3 System Configuration Describes the configuration features of the BTS3012AE.


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3 System ArchitectureHUAWEI BTS3012AE Base Station

System Description


3.1 Physical ArchitectureThe design of the BTS3012AE cabinet complies with the IEC60297standard. The dimensionsof the BTS3012AE are as follows:

Height: 1700 mm Width: 1000 mm Depth: 880 mm

Figure 3-1 shows the BTS3012AE cabinet.

Figure 3-1 BTS3012AE cabinet

The 48 V 50 AH storage cabin of the BTS3012AE can be removed to form a 7 U space withthe reserved 2 U space. This space can be used to accommodate transmission equipment orother equipment of the operators.

Figure 3-2 (A) lists the full configuration of the BTS3012AE under 150 AH+50 AH+2U. Figure 3-2 (B) lists the full configuration of the BTS3012AE under 150 AH+7U.


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After the 48 V 50 AH storage battery cabin is removed, it can not be used as the storage battery cabinagain because it cannot meet the sealing requirements. That is to say, the cabinet shown Figure 3-2 (A)can be changed to the cabinet shown Figure 3-2 (B) while the cabinet shown Figure 3-2 (B) cannot bechanged to the cabinet Figure 3-2 (A).

Figure 3-2 Full configuration of the BTS3012AE

D C P D U

D T M U

D A T U

D C S U

D C C U

DTRU

DTRU

DTRU

DTRU

DTRU

DTRU

BAT -48V 150AH

Wire holder

FAN

Air inlet

PSU

Cable in/outEMI

Wire holder

D T M U

Wire holder

Air inlet

T r a n s m

i s s

i o n u n

i t

BAT -48V 50AH

Air return

AC PDU

PSU

Air return

DPMU

PSU

PSU

PSU PSU

PSU PSU

DELU 0DMLUDELU 1

DDPU

DDPU

DDPU

DCOM

DCOM

D C P D U

D T M U

D A T U

D C S U

D C C U

DTRU

DTRU

DTRU

DTRU

DTRU

DTRU

BAT -48V 150AH

Wire holder

FAN

Air inlet

PSU

Cable in/outEMI

Wire holder

D T M U

Air inlet

Transmission unit

Air return

AC PDU

PSU

Air return

DPMU

PSU

PSU

PSU PSU

PSU PSU

DELU 0DMLUDELU 1

Wire holder

(A) (B)

DCOM

DDPU

DDPU

DDPU

DCOM

DCOM

DCOM

Table 3-1 lists the boards and modules in the BTS3012AE.

Table 3-1 Boards and modules

Board and Module Full Spelling

DTRU Double-Transceiver Unit

DTMU Transmission & Timing & Management Unit for DTRU BTS

DCCU Cable Connection Unit for DTRU BTS

DCSU Combined Cabinet Signal Connection Unit for DTRU BTS


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System Description


Board and Module Full Spelling

DAFU Antenna Front-end Unit for DTRU BTS

DDPU Dual-Duplexer Unit for DTRU BTS

DCOM Combining Unit for DTRU BTS

DATU Antenna and TMA Control Unit for DTRU BTS

DELU E1 Signal Lightning-Protection Unit for DTRU BTS

DMLU Monitor Signal Lightning-Protection Unit for DTRU BTS

PSU Power Supply Unit

DPMU Power and Environment Monitoring Unit for DTRU BTS

3.2 Functional ArchitectureThe BTS3012AE uses a modular design. According to the function of the modules, it can bedivided into:

Common subsystem Double-transceiver subsystem RF subsystem Power supply subsystem

Monitoring subsystem


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The BTS3012AE integrates these modules into a cabinet to form a base transceiver stationwhich fully complies with the outdoor protection standards and can operate independently.Figure 3-3 lists the functional modules of the BTS3012AE.

Figure 3-3 Functional modules of the BTS3012AE

Um

RFsubsystem

DAFU

DAFU

DTRU

Double-transceiversubsystem

CBUS/DBUS/TBUS

DTRUFiber

E1

Combined cabinetor cabinet group 1

BITS

Common subsystemMonitor

DAFUDTRU

DATU

Optical transmissionequipment (optional)

E1

DTMU

Abis

AC

DPMUBattery

Power supply subsystem

Monitoringsubsystem PSU

Cabinetgroup 2

NFCB

S i g n a

l p r o

t e c

t i o n

s u

b s y s

t e m

TMA TMA

TMA TMA

TMA TMA

3.2.1 Common SubsystemThe common subsystem consists of the BTS common subsystem and signal protectionsubsystem.

The BTS common subsystem performs the following functions:

Managing and controlling other subsystem and modules. Importing E1 signals. Providing clock for the BTS.

Controlling the Remote Electric Tilt (RET), and transmitting the signals from the TMAto the BTS through the feeder cable.

The signal protection subsystem performs the following functions:

Protecting the E1 signal from lightning. Protecting the monitor signal from lightning. Connecting cabinets to form a combined cabinet or a cabinet group.


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System Description


Table 3-2 lists the boards in the common subsystem and their functions.

Table 3-2 Board in the common subsystem and their functions

CommonSubsystem

Board Function

DTMU Uses the active/standby mode. Supports 4-route E1 inputs by default, and 8-route E1 inputsfor special requirements.

Provides a 10 Mbit/s Ethernet port for terminal maintenance. Supports 8-route Boolean alarm inputs and 4-route extendedBoolean control signal outputs.

Supports the external GPS and BITS synchronization clockinput.

DCCU Outputs and inputs signals.

DCSU Forwards the combined cabinet signals and cabinet groupsignals from the common subsystem to the DSCB.

BTSCommonsubsystem

DATU Transmitting the remote electrical tilt unit (RET) controlsignals.

Feeding the TMA. Reports alarms related to the control of the RET antenna andmonitoring of the feed current.

DMLU Provides lighting protection for 8-route external Booleanvalue inputs.

Provides 2-route 485 serial control bus port.

Signalprotection

subsystem

DELU Provides lighting protection for 4-route E1 signals.

3.2.2 Double-Transceiver SubsystemThe main functions of the double-transceiver subsystem are as follows:

Baseband signals processing RF receive processing and transmit processing Power amplification Transmit diversity and 4-way receive diversity PBT


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Table 3-3 lists the boards in the double-transceiver subsystem and their functions.

Table 3-3 Boards in the double-transceiver subsystem and their functions

Board Function

DTRU Processes the RF and baseband signals of two carriers. Processes the baseband frequency hopping and RF hopping. Supports the enhanced functions such as PBT, transmit diversity, and 4-wayreceive diversity.

3.2.3 RF SubsystemThe RF subsystem comprises:

RF antenna subsystem DAFU subsystem RF transceiver subsystem

Table 3-4 lists the components of each part.

Table 3-4 RF subsystem components and their functions

RFSubsystem

Board andModule

Function

Antenna Transmits and receives signals.

Feeder Connects the antenna to the ANTA or ANTB port on theDAFU.

Antennasubsystem

TMA Amplifies signals.

DDPU Sends the multiple channels of the RF signals from thetransceiver to the antenna through the duplexer.

Amplifies the received signals from the antenna anddivides the signals into four parts and then sends themto the transceiver.

DAFUsubsystem

DCOM Combines two routes of signals into one route.

RFtransceiversubsystem

DTRU (RF) Transmits signals. Receives signals. Combines frequency. Performs loop test. Amplifies the power. Outputs the power individually. Outputs the combination power.


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System Description


3.2.4 Power Supply SubsystemThe power supply subsystem consists of the PSU, DPMU, and storage batteries. It performsthe following functions:

Converting the external power input into 48 V DC power. Providing 48 V DC power for the entire BTS3012AE. Charging and discharging the storage batteries.

Table 3-5 lists the boards of the power supply subsystem and their functions.

Table 3-5 Boards of the power supply subsystem and their functions

Board Function

DPMU Monitors the PSU, storage batteries, and the internal environment of thecabinet.

Inputs 6-route external Boolean values and outputs 2-route Boolean values.PSU Converts the external power into 48 V DC, and then supply the 48 V DC

power for each BTS3012AE module.

Storagebatteries

Supplies power for the BTS3012AE when the external power supply fails.

3.2.5 Monitoring SubsystemThe functions of the monitoring subsystem are as follows:

Managing and monitoring the internal environment of the cabinet, the power supplysystem, and the charging and discharging of the storage batteries. Reporting themonitoring results to the DTMU.

Collecting the environment parameters such as the temperature, humidity, smoke, andwater immersion sent from the sensors, and then reports the result to the DTMU. TheDTMU processes the reported results and then sends the results to the OMC.

Keeping the BTS3102AE in a proper temperature. The heat exchanger heats theBTS3012AE and the fans dissipate the heat for the BTS3012AE. When the temperatureexceeds the threshold, the system generates alarms.

3.3 System ConfigurationThe system configuration is as follows:

A single BTS3012AE cabinet under full configuration has a maximum of 12 TRXs, thatis, 6 DTRUs.

The BTS3012AE can form, with other types of BTSs, a combined cabinet or cabinetgroup of up to three cabinets.


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HUAWEI BTS3012AE Base StationSystem Description 4 Services and Features


4 Services and FeaturesAbout This Chapter


Title Description

4.1 Services Describes the main services that the BTS3012AEprovides.

4.2 Features Describes the main functions of the BTS3012AE.


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4 Services and FeaturesHUAWEI BTS3012AE Base Station

System Description


4.1 ServicesTable 4-1 lists the services that the BTS3012AE supports.

Table 4-1 BTS3012AE service list

Service Abbreviation Description

EFR Enhanced full rate voice service

FR Full rate voice service

HR Half rate voice service

Voice service

AMR Adaptive multi-rate

F9.6 9.6 kbit/s full rate data service


Data service


GPRS CS1/CS2/CS3/CS4 packet servicePacket service

EDGE MCS1MCS9 EGPRS packet service

4.2 FeaturesThe special features of the BTS3012AE with respect to the following aspects are describedhere.

EDGE

The BTS3012AE supports system information broadcast and resource indication, which arecompatible with the 3GPP R99.

Handover The BTS3012AE supports synchronous and asynchronous handovers. The BTS3012AE supports dual-band handover.

Frequency Hopping The BTS3012AE supports baseband frequency hopping. The BTS3012AE supports RF hopping.

Encryption The BTS3012AE has the A5/0 non-encryption function. The BTS3012AE has the encryption and decryption functions of A5/1 and A5/2.


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HUAWEI BTS3012AE Base StationSystem Description 4 Services and Features


Power Control The BTS3012AE can support the static power control. The BTS3012AE can support the dynamic power control.

Detection The BTS3012AE can detect the random access collision. The BTS3012AE can detect whether the main boards and modules are in position. The BTS3012AE can detect and report the output power of the DTRU module.

Extended Cell

With the extended cell function, the BTS3012AE can cover an area of up to 120 km.


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HUAWEI BTS3012AE Base StationSystem Description 5 Operation and Maintenance


5 Operation and MaintenanceAbout This Chapter


Title Description

5.1 O&M Subsystem Describes two O&M methods of the BTS3012AE.

5.2 O&M Functions Describes the O&M functions of the BTS3012AE.


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5 Operation and MaintenanceHUAWEI BTS3012AE Base Station

System Description


5.1 O&M Subsystem

5.1.1 Overview of the O&M SubsystemThe BTS3012AE provides two maintenance methods:

Terminal maintenance Remote maintenance

Figure 5-1 shows the topology of the O&M subsystem.

Figure 5-1 Topology of the O&M subsystem

Site MaintenanceTerminal System

MMI

MMI

BTS

BTS

BSC

A b i s

A b i s

OMC

Server

Hub

Remote SiteMaintenance System

Site MaintenanceTerminal System

5.1.2 Terminal MaintenanceAs shown in Figure 5-1, terminal maintenance is implemented through a PC. The PC isconnected to the BTS3012AE through an Ethernet cable.

You can operate and maintain sites, cells, and TRXs through the terminal maintenance.

5.1.3 Remote MaintenanceAs shown in Figure 5-1, remote maintenance is implemented through a PC. The PC forms anetwork with the OMC, BSC, and BTS.

The remote maintenance uses Graphic User Interface (GUI) and topological view. You can seethe name, type, location, number, and running status of each NE through the GUI interface.

You can view the detailed performance data, alarm data, and configuration data of an NE.

You can also operate or maintain an NE through the topological view.


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HUAWEI BTS3012AE Base StationSystem Description 5 Operation and Maintenance


5.2 O&M FunctionsThe BTS3012AE O&M system provides powerful O&M functions, which includes:

Security Management Alarm Management Data Configuration Maintenance Management

5.2.1 Security ManagementThe BTS3012AE authorizes maintenance engineers with hierarchical operation rights toensure the security. At the same time, it prompts the possible outcome of dangerousoperations.

5.2.2 Alarm ManagementThe alarm management function of the BTS3012AE can detect and report equipment faultsand abnormal functioning in a real time manner.

With this function, the BTS3012AE can collect, clear, query, handle, save, explain, prompt,filter, and analyze alarms.

In addition, the online help and layered alarm filtering function help you to quickly locatefaults and provide fault recovery methods.

5.2.3 Data ConfigurationThe O&M subsystem of the BTS3012AE allows addition, deletion, modification, and

consistency check of the BTS data. It supports both dynamic and static data configurations.

5.2.4 Maintenance ManagementThe O&M subsystem of the BTS3012AE provides the following maintenance functions:

Downloading software to boards or modules, or starting and initializing boards ormodules.

Recording the interface tracing messages and running status of the BTS through logs. Implementing in-position tests for boards. Testing the Abis link of the DTRU, testing channels, and self checking the site, cell,

carrier, and board.

Providing backup management for the active/standby DTMU.


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HUAWEI BTS3012AE Base StationSystem Description 6 Reliability


6 ReliabilityAbout This Chapter


Title Description

6.1 System Reliability Describes the reliability of the BTS3012AE system.

6.2 Hardware Reliability Describes the reliability of the BTS3012AE hardware.

6.3 Software Reliability Describes the reliability of the BTS3012AE software.


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6 ReliabilityHUAWEI BTS3012AE Base Station

System Description


6.1 System ReliabilityThe BTS3012AE is designed after overall analysis on system reliability. The BTS3012AEuses the following methods to enhance the system reliability:

Active/standby mode Load sharing Redundant configuration Optimized fault detection of boards and system Optimized fault isolation

Redundancy Design

The BTS3012AE uses the redundancy design. The key clock bus, control bus, data bus, andDTMU modules use the 1+1 backup mode. The transceivers mutual aid is also supported.

System Monitoring

The BTS3012AE can automatically detect and diagnose faults in the hardware or softwareand report them through alarms. It can also detect environmental status and reportabnormalities in time.

6.2 Hardware ReliabilityThe BTS3012AE adopts the following methods to enhance hardware reliability:

Prevention against Mistakenly Inserted Boards Redundancy Design of Fan Box Protection against Excessive Rise in Temperature of the DTRU Reliability Design for Power Supply

Prevention against Mistakenly Inserted Boards

When a functional board is inserted into a wrong slot, it cannot get into full contact with thebackplane. This prevents the equipment from being damaged.

Redundancy Design of Fan Box

The fan uses N+1 redundancy backup mode. If a fan is faulty, the other fans run at full speed.Under normal temperature, this design can meet the heat dissipation requirement.

Protection against Excessive Rise in Temperature of the DTRU

When the temperature around the last level power amplifier is too high, the power amplifierreports the excessive rise in temperature through an alarm, and then enters into the automaticprotection state.


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HUAWEI BTS3012AE Base StationSystem Description 6 Reliability


Reliability Design for Power Supply

The power supply system of the BTS3012AE has the following features in terms of reliabilitydesign:

The power supply system has the power environment monitoring system, whichperforms the following functions:

Monitoring the power distribution of the AC/DC

Managing the charging and discharging of the storage batteries

Monitoring the cabinet environment

Monitoring the storage battery cabinet environment

Monitoring the extension cabinet environment

Monitoring the input and output of extended alarms When the external power supply fails, the internal storage batteries of the BTS3012AE

can supply power for several hours. An alarm about the failure of the external powersupply is sent to the OMC to prompt for proper handling.

The BTS3012AE uses a distributed power supply. The DC/DC power modules operate inN+1 redundancy mode. When a module fails, an alarm is sent to the OMC. You caneasily replace the faulty module because the DC/DC is hot swappable.

The power supply has a lightning protection function and a protection function againstvoltage variation.

The BTS3012AE provides power failure protection for programs and data. The boards of the BTS3012AE provide protection against excessive voltage and current. The boards of the BTS3012AE provide protection against reverse-polarity connection.

6.3 Software ReliabilitySoftware reliability is reflected in the powerful capability of error tolerance. The entire systemwill not get corrupted when the software fails. That is, the system has self-healing capability.Error tolerance of the BTS3012AE is shown in the following aspects.

Regular Check on Key Resources

Seizure check is conducted on various software resources in the system. The checkmechanism can ensure the release of suspended resources and the output of the related logsand alarms.

Task Monitoring

When the software is active, the task monitoring function can monitor any possible fault inthe software or hardware. In addition, detected faults can be reported. Task status and systemabnormalities can also be monitored.

Data Check

The system can perform regular or event-driven checks on data consistency, restore the dataconsistency selectively or preferably, and output related logs and alarms.


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6 ReliabilityHUAWEI BTS3012AE Base Station

System Description


Saving Operation Log Information

The system records user operations within a certain period and saves the recorded informationto the system operation logs. Operation logs can be used to locate errors or exceptionsbecause of incorrect operations so that the system can be restored to the normal state.


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HUAWEI BTS3012AE Base StationSystem Description 7 Technical Specifications


7 Technical SpecificationsAbout This Chapter


Title Description

7.1 Radio Specifications Describes the radio specifications of the BTS3012AE.

7.2 Engineering Specifications Describes the engineering specifications of theBTS3012AE.


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7 Technical SpecificationsHUAWEI BTS3012AE Base Station

System Description


7.1 Radio Specifications

7.1.1 Working Frequency BandsTable 7-1 lists the working frequency bands of the BTS3012AE.

Table 7-1 BTS3012AE working frequency bands

Frequency Band Parameter Specifications

Receive band 876915 MHz

Transmit band 921960 MHz

900 MHz

Space between carriers 200 kHz



1800 MHz




850 MHz




1900 MHz


7.1.2 Transmit SpecificationsTable 7-2 lists the nominal output power of the DTRU.

Table 7-2 Nominal output power of the DTRU

GSM850/GSM900/GSM1800/GSM1900ModulationScheme Output Power (Without

Combination)Output Power (with the PBTFunction)

GMSK 60 W (47.78 dBm) 80 W (49.00 dBm)

8PSK 40 W (46.02 dBm) 60W (47.78 dBm)

a: GMSK = Gaussian Minimum Shift Keying

b: PSK = Phase Shift Keying


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7.1.3 Receive SpecificationsTable 7-3 lists the static receive sensitivity of the BTS3012AE.

Table 7-3 BTS3012AE receive sensitivity

Channel Type Receive Sensitivity

TCH/FS 112.5 dBm (a typical value in normal temperature)

Others Better than the requirements specified in the 3GPP TS 05.05 protocols

7.2 Engineering Specifications

7.2.1 DimensionsTable 7-4 lists the mechanical dimensions of the BTS3012AE.

Table 7-4 Mechanical dimensions of the BTS3012AE

Item Width (mm) Depth (mm) Height (mm)

Cabinet 1000 880 1700

Cabinet + cabinet base 1000 880 1900

7.2.2 WeightTable 7-5 lists the weight of the BTS3012AE.

Table 7-5 Weight of the BTS3012AE

ConfigurationType

Configuration Weight (kg)

Empty cabinet Excluding the heat exchanger or internal subracks. 200

Assembly cabinet Including the heat exchanger and internalsubracks. 310

Full configuration (nostorage batteries)

Configured with a front door and all the boards. 390


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System Description


7.2.3 Power SupplyThe BTS3012AE uses a mature EPS210-4830A power supply system.

Table 7-6 lists the specifications of the input power.

Table 7-6 Specifications of the input power

Rating Voltage (V AC) Rating Frequency Power Distribution Type

200250 20% 4565 Hz 220 VAC single-phase 2-core input

346/200433/250 20% 4565 Hz 220 VAC 3-phase 4-core input

208/120220/127 20% 4565 Hz 110 VAC dual-live input

Note: In 346/200V AC , 346 is the line voltage, and 200 is the phase voltage. Other similar expressions are thesame as 346/200V AC .

7.2.4 Power ConsumptionTable 7-7 lists the power consumption of the BTS3012AE under typical configuration.

Table 7-7 Power consumption of the BTS3012AE under typical configuration

Power Consumption 850 MHz/900MHz

1800 MHz/1900MHz

Typical power consumption

(S4/4/4, 40 W GMSK)

1.8 kW 2.0 kW

Maximum power consumption

(S4/4/4, 40 W GMSK full load with 2% GOS)

2.8 kW 3.0 kW

Typical power consumption

(S4/4/4, 60 W GMSK)

2.0 kW 2.3 kW

Maximum power consumption

(S4/4/4, 60 W GMSK full load with 2% GOS)

3.1 kW 3.4 kW

Power distribution capacity (S4/4/4) 7.4 kW 7.8 kW


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7.2.5 Transmission

Transmission Interfaces

Table 7-8 lists the transmission interfaces of the BTS3012AE.

Table 7-8 BTS3012AE transmission interfaces

Interface Type Quantity Rate Standard

E1 4 pairs 2 Mbit/s ETS 300 420ITU G.703/G.704

STM-1 2 pairs 155 Mbit/s ANSI T1.105-1995ITU I.432.2 G.703ITU G.957

Other External Interfaces

Table 7-9 lists the other external interfaces of the BTS3012AE.

Table 7-9 Other external interfaces of the BTS3012AE

Interface Function

Clock interface Used to connect the external clock, such as theBITS, which provides a high precision clock at2.048 MHz.

220 V AC powerinput interface

-

110 V AC powerinput interface

-

Power andgroundinginterface

Groundinginterface

-

External alarminput

Used to input 14-route Boolean values.Monitoringinterface

External controloutput port

Used to output 6-route Boolean values.

Antenna feeder interface Used to connect the feeder.


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System Description


7.2.6 Operation EnvironmentTable 7-10 shows the requirements for the operation environment of the BTS3012AE.

Table 7-10 BTS3012AE operation environment requirements

Item Range

Temperature 40 to +45 (equipped with heat exchanger)

Humidity 5% RH to 95% RH

7.2.7 EMCThe BTS3012AE fulfils the Electromagnetic Compatibility (EMC) requirements. It complieswith the following protocols:

R&TTE Directive 99/5/EC 3GPP TS 25.113 V4.4.0 (December 2002) ETSI EN 301 489-1/23 ETSI EN 301 908-1 V2.2.1 (October 2003)

7.2.8 Acoustic NoiseThe BTS3012AE complies with the following protocols in terms of noise:

GR-63-CORE-1995

ETS 300 753 5.2

7.2.9 Storage EnvironmentThe BTS3012AE complies with the following protocol in terms of storage environment:

ETS class 1.2 Weather Protected, Not Temperature Controlled Storage Locations in ETS 300019-1-1.

7.2.10 Transportation EnvironmentThe BTS3012AE complies with the following protocol in terms of transportationenvironments:

ETS class 2.3 Public Transportation in ETS 300 019-1-2.

7.2.11 Equipment ProtectionThe BTS3012AE complies with the following protocols in terms of equipment protection:

The BTS3012AE cabinet fulfils the requirements of IEC 529. The protection levelreaches IP55.

The heat exchanger has the sand-resistant function, which complies with the IEC721-2-5.


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7.2.12 Anti-Seismic PerformanceThe BTS3012AE complies with the following protocols in terms of anti-seismic performance:

IEC 60068-2-57 (1999-11) Environmental testing Part 2-57: Tests Test Ff: Vibration

Time-history method.

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HUAWEI BTS3012AE Base Station